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The objective of this study was to compare several commonly used lime requirement tests and soil capacity factors for their ability to predict pH change following wood-ash amendment. The ability to predict pH change is important because it is one of the criteria used to prescribe rates of ash amendment to forest soils.
Maine Agricultural Experiment Station
Unger, Y.L., and I.J. Fernandez. 1989. A laboratory study to assess methods for predicting pH change of ash amended forest soils. Maine Agricultural Experiment Station Technical Bulletin 134.